Regulator for marine clocks.



W. E. PORTER.

REGULATOR FOR MARINE CLOCKS.

APPLICATION HL ED JAN-'21. I915.

Patented Nov. 2, 1915.

UNITED STATES PATENT OFFICE.

WILSON E. PORTER, OF NEW HAVEN, CONNECTICUT, ASSIGNOR TO NEW HAVEN CLOCK CO., OF NEV] HAVEN, CONNECTICUT, A CORPORATION.

REGULATOR FOR MARINE CLOCKS.

Application filed January 21, 1915.

To all whom it may concern Be it known that I, lViLsoN E. Ponrnn, a citizen of the United States, residing at New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Regulators for Marine Clocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application and represent, iii- Figure 1 a view in front elevation of a clock-movement constructed in accordance with my invention, the movement being shown as removed from its case. Fig. 2 a broken side view of the front part of the movement with the dial, dial-back and concentric operating-lever in vertical section. Fig. 3 a view in front elevation of the move ment with the dial and dial-back remo ed. Fig. 41 a detached view of the concentric operating-lever shown on an enlarged scale.

My invention relates to an improved regulator for marine clocks, the object being to enable one movement to be used with dials of dilferent diameters, to avoid the mutilation of the dials, and to insure a more accurate regulation of a movement by its user than is ordinarily secured with the regulators in use at the present time.

lVith these ends in view, my invention consists in a regulator for marine clocks, having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claims.

In carrying out my invention as herein shown, I employ an operatinglever 2 formed at its lower end with a ring-bearing 3 by means of which it is mounted upon the projecting inner end of a gromet-like hollow stud t mounted in the center of the dialback 5 to the front face of which the dial 6 is applied, whereby the lever is mounted so as to swing concentrically with respect to the dial-back and dial. The said lever 2 is furnished at a predetermined distance from its said bearing-ring 3, with a disk-shaped enlargement 7 formed with a vertical slot 8 located in line with the axis of the lever and receiving a forwardly projecting pin 9 located in the end of a depending spring- I regulating arm 10 turning upon a bearingscrew 11 mounted in the regulator-bridge 12 Specification of Letters Fatent.

Patented Nov. 2, 1915.

Serial No, 3,475.

of the front movement-plate 13, the said lever 10 carrying a wire loop 14; through which the outer coil of the hair or balance spring 15 passes. The said spring 15 encircles and is attached at one end to a balance-staff 16 carrying a balancewheel 17 and at its forward end journaled in the bearing-screw stud 11 aforesaid and at its rear end in a corresponding screw 18 mounted in an intermediate movement-plate 19. The parts 9 to 19 inclusive are of ordinary and well known construction. At its upper end the lever 2 carries an operating-pin 20 projecting forward through a clearance opening or notch 21 in the upper edge of the dial 6, the lower edge of the notch 21 being furnished with graduations 22 located directly below the pin 20 and measuring the swinging movement of the same to the right or left. The pin 9 projects through the slot 8 and the pin 20 into and through the notch 21. As herein shown, the dial-back 5 is formed in its upper edge with a deep and wide notch or clearance-opening 23 for the double purpose of clearing the pins 9 and 20 which are concurrently moved laterally with the movement of the lever 2 to the right or left for the regulation of the escapement. The socket 2st of the socket or hour-wheel 25 on the center arbor 26, projects forward through the hollow stud 4c. The minute hand 27 is applied to the projecting forward end of the center arbor 26 while the hour hand 28 is applied to, the projecting forward end of the socket 24.

Heretofore the pin 9 has been projected forward through a segmental slot formed directly in the dial and so sharply curved on account of the short radius of the arm 10 as to mutilate the dial by breaking into the figure 12 thereof. This is equally true whether the arm 10 is extended upward or downward. Under my invention, the mutilation of the dial is avoided by using the operating-lever 2 turning on a point concentric with the center of the dial on such a long radius that the operating-pin 20 by which it is moved, always travels concentric with the dial 6 in a path which can never intersect any of the figures thereon. There fore the segmental graduations 22 may be located relatively close to the printing on the dial without cutting into the same. Under my invention it is possible to use the same movement in cases varying in diameter,

and therefore calling for a corresponding variation in the dimensions of the dials. 'To effect this purpose, the levers 2 are initially made long enough for the largest dials, as indicated in broken lines in Fig. 4, and cut off according totoe dimensions of the dials with which they. are to be used, it being understood that the distance between the enlargement 7 and slot 8 of the lever 2 and its ring 3 remains constant. It will also be apparent that a high degree of accuracy of regulation is insured by the use of the lever 2, since on account of its length, a slight movement of it in either direction effects a slighter movement of the regulator-arm 10 than would result if the arm 10 were moved directly by means of the pin 9, the common fault in the regulation of marine clocks by the average user being that the user over does it, which he is far less apt to do when the lever 2 is employed, since a. relatively large movement of the same effects a slighter change in the portion of the arm 10 than if the same were moved directly by hand instead of through the medium of the long lever 2 which, as it were, is interposed between the user and the arm 10.

1. In a regulator for marine clocks, the combination with the dial thereof, of an'operating-lever located back of the dial and pivoted concentric therewith, and an escapement-regulator connected with the said operatingdever for operation thereby.

2. In a regulator for marine clocks, the combination with the dial thereof, of an operating-lever located back of the dial, pivoted concentric therewith and extendingbeyond the circle of the dial figures, and an escapementregulator connected with the said operating-lever for operation thereby.

3. In a regulator for marine clocks, the combination with a dial having in its upper edge a notch located outside of the circle of the dial figures, of an operating-lever located-back of the dial, pivoted concentric therewith and extending alongside of the said notch through which it'is operated, and an escapement-regulator connected with the said operating-lever for operation thereby.

4. In a regulator for marine clocks, the

combination with the dial and'dial-back, of an operating-lever pivotally mounted upon the dial-back concentric therewith, and an escapement regulator connected with the said operating-lever for operation thereby.

7. In a regulator for marine clocks, the

combination with the dial thereof, the said dial being formed in its upper edge with a clearance opening, of an operating-lever located back of the dial, pivoted concentric therewith and extending to the said clearance-opening which provides-access to it for its manual operation, and an escapement-regulator connected with the said operating-lever for operation thereby.

8. In a. regulator for marine clocks, the combination with a dial having a complementary clearance notch in its upper edge, of a dial-back having a clearance-openin an operating-lever concentrically mounted upon the dial back, and an escapement regulator connected with the said lever for operation thereby. o

9. In a regulator for marine clocks, the combination with the dial thereof, of an operatinglever located back of the said dial, pivoted concentric therewith and adapted in length to the diameter. thereof, and an escapement-regulator connected with the said operating-lever for operation thereby.

' In testimony whereof, I have signed this specification in the presence of two subscribing witnesses.

WVILSON E. PORTER. Witnesses CLARA L. WEED, FREDERIG C. EARLE.

Copies of this. patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. 

